Name: ER70S-6 Solid Wire Carbon Steel 1.2 MAG
SKU: 2691409

Product Introduction

ER70S-6 Copper-Coated Solid Wire – All-Position, High-Efficiency Gas-Shielded Wire

Designed for welding carbon steel and low-alloy steel structures of corresponding strength levels, the ER70S-6 is a 500 MPa-class copper-coated solid wire. It is used with CO2 or 80% Ar + 20% CO2 gas shielding. The wire offers low spatter, good bead appearance, high deposition efficiency, low porosity sensitivity, and good all-position welding process performance. It also has strong resistance to oxide scale and oil contamination on the base metal surface.

Key Features:

High Deposition Efficiency & Contamination Resistance – Key Advantages

ER70S-6 is a 500 MPa-class copper-coated carbon steel solid wire for CO2 or 80% Ar + 20% CO2 gas-shielded welding. It provides high deposition efficiency and strong resistance to oxide scale and oil contamination on the base metal surface.

Smooth Arc & Clean Welding

The wire delivers stable arc burning, low spatter, good bead appearance, and low porosity sensitivity.

All-Position Capability with High Deposition Efficiency

Good all-position welding process performance; suitable for a wide welding current range; high deposition efficiency.

Low-Temperature Toughness – Impact Toughness at -30°C

The deposited metal meets ≥27 J at -30°C (example value: 108 J), indicating good low-temperature impact toughness.

Stable Performance with CO2 or Ar/CO2 Shielding

Designed for CO2 or 80% Ar + 20% CO2 shielding. With Ar-rich gas, better bead appearance and lower spatter can be obtained; however, argon-induced white spots should be prevented by using high-purity gas and proper welding technique.

Specifications

Typical Chemical Composition (%)

C	Mn	Si	S	P	Ni	Cr	Mo	V	Cu
0.06–0.15	1.40–1.85	0.80–1.15	≤0.025	≤0.025	≤0.15	≤0.15	≤0.15	≤0.03	≤0.50

Typical Mechanical Property

Tensile Strength Rm (MPa)	Yield Strength ReL/Rp0.2 (MPa)	Elongation A (%)	Impact Toughness KV₂ at -30°C (J)
≥500	≥420	≥22	≥27

Classification: AWS A5.18 ER70S-6; GB/T8110 ER50-6; ISO 14341-B-G49A3C S6
Type:Copper-coated carbon steel solid wire for gas-shielded welding
Polarity: DC+
Shielding Gas: CO₂ or 80% Ar + 20% CO₂
Available Diameters: Φ0.8, Φ1.0, Φ1.2, Φ1.6 mm
Welding Positions: All-position
Packaging: 15 kg/spool, 20 kg/spool (standard); other packaging formats available (per requirement)

Operating Notes

1. Before welding, remove rust, oil, moisture, and other impurities from the workpiece.
2. Welding heat input directly affects the mechanical properties of the weld. The heat input should be selected according to the importance of the structure. For more critical structures, use lower heat input as much as possible.
3. The provided welding parameters are for reference only. Users should establish suitable welding procedures according to actual conditions.
4. When using Ar-rich gas shielding, better bead appearance and lower spatter can be obtained. However, argon-induced white spots should be prevented by using high-purity gas and proper welding technique.
5. Excessive welding heat input will seriously affect the mechanical properties, crack resistance, and tightness of the weld, and should be given more attention.
6. When using Ar-rich shielding gas with spray transfer, to prevent severe arc short-circuiting and porosity, do not set the arc voltage too low, and the arc length should be 4–5 mm.
7. When using Ar-rich gas shielding, strictly remove oil, rust, moisture, and other impurities from the welded surface. Gas flow rate should not be too high, gas purity must be high, and moisture content should be minimized.

Ideal For

Welding of carbon steel and 500 MPa-class low-alloy steel structures, such as vehicles, bridges, buildings, machinery structures, engineering machinery, shipbuilding, vehicle manufacturing, and petrochemical industries. Suitable for single-pass and multi-pass welding and high-speed welding.